> including treating my monitor as a speaker for some reason (it doesn't have built-in speakers).
This is quite common on HDMI monitors. Since the HDMI connection transmits both audio and video, the monitor just accepts both audio and video input. They would then have a 3.5-mm jack to allow you plug in an actual speaker or headphone to receive the audio output.
This is quite common on HDMI monitors. Since the HDMI connection transmits both audio and video, the monitor just accepts both audio and video input. They would then have a 3.5-mm jack to allow you plug in an actual speaker or headphone to receive the audio output.